Ok maybe a silly question but I thought I would ask the experts. I have never been sure how many gallons my pool holds. I’ve seen all the various ways to calculate it but my pool is an irregular shape and has an attached hot tub. My best guess is it is about 12000 gallons. I just did a test and found the FC to be 5.5. I added one gal of 10% liquid chlorine and waited about an hour and retested. The resulting FC was 12.0 a rise of 6.5ppm. Is there any method of reverse engineering the math to determine the actual capacity of the pool based on the FC rise with the gallon addition? My thinking is that math is not possible due to the number of variables involved such as temperature, amount of sunlight, algae content etc. At any rate I thought I would ask. Thanks for any info.
Reverse engineering the math
- Thread starter SpockF4
- Start date
- Jul 21, 2013
- 52,856
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
PoolMath Effects of Adding will calculate it for you.
www.troublefreepool.com
Calculators - Further Reading
www.troublefreepool.com
Last edited:
kul
Bronze Supporter
- Oct 1, 2021
- 1,253
- Pool Size
- 15000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
I’m not sure of the “mathy way”, but when I started I used an online pool volume calculator after measuring the pool dimensions and then added some room for error with the spa and came up with 15,000 which works for me because when I add anything, pool math is able to correctly predict what might happen.
- Jun 8, 2019
- 4,576
- Pool Size
- 20000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
There is a chemical way of calculating pool size. I did it myself - came up to almost exactly 20k gallons (and as the post says it still has a margin of error, but it's enough for you to work with confidence on additions to the chemicals in the pool.
It does require quite a bit of TA reagent.
www.troublefreepool.com
It does require quite a bit of TA reagent.
A Chemical Way of Calculating Pool Volume
There is a way to use pool water chemistry to calculate pool water volume without using the traditional geometric calculations. The geometric formulas are fine for pools that are traditionally shaped. However, when pools do not fall into these convenient shapes, a chemical method can be used...
www.troublefreepool.com
- Feb 6, 2015
- 6,166
- Pool Size
- 12300
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45 Plus
It doesn't have to be perfectly dead on either - close is close enough.
And you can tweak the volume over time by checking your chemical additions now and then.
And you can tweak the volume over time by checking your chemical additions now and then.